libgcc-std.ver (_Unwind_Find_Enclosing_Function): Add.

2002-11-25  Andrew Haley  <aph@redhat.com>

        * libgcc-std.ver (_Unwind_Find_Enclosing_Function): Add.
        * config/ia64/unwind-ia64.c (_Unwind_Find_Enclosing_Function): New.
        * unwind-sjlj.c (_Unwind_Find_Enclosing_Function): Likewise.
        * unwind-dw2.c (_Unwind_Find_Enclosing_Function): Likewise.

From-SVN: r59460

gcc/ChangeLog

+2002-11-25  Andrew Haley  <aph@redhat.com>
+
+        * libgcc-std.ver (_Unwind_Find_Enclosing_Function): Add.
+        * config/ia64/unwind-ia64.c (_Unwind_Find_Enclosing_Function): New.
+        * unwind-sjlj.c (_Unwind_Find_Enclosing_Function): Likewise.
+        * unwind-dw2.c (_Unwind_Find_Enclosing_Function): Likewise.
+
 2002-11-24  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* config/h8300/h8300.c (h8300_init_once): Fix a typo in the

gcc/config/ia64/unwind-ia64.c

@@ -1642,6 +1642,12 @@ _Unwind_GetRegionStart (struct _Unwind_Context *context)
   return context->region_start;
 }
 
+void *
+_Unwind_Find_Enclosing_Function (void *pc)
+{
+  return NULL;
+}
+
 
 static _Unwind_Reason_Code
 uw_frame_state_for (struct _Unwind_Context *context, _Unwind_FrameState *fs)

gcc/libgcc-std.ver

@@ -158,6 +158,7 @@ GCC_3.0 {
   _Unwind_Resume
   _Unwind_SetGR
   _Unwind_SetIP
+  _Unwind_Find_Enclosing_Function
   __deregister_frame
   __deregister_frame_info
   __deregister_frame_info_bases

gcc/unwind-dw2.c

@@ -202,6 +202,17 @@ _Unwind_GetRegionStart (struct _Unwind_Context *context)
   return (_Unwind_Ptr) context->bases.func;
 }
 
+void *
+_Unwind_Find_Enclosing_Function (void *pc)
+{
+  struct dwarf_eh_bases bases;
+  struct dwarf_fde *fde = _Unwind_Find_FDE (pc-1, &bases);
+  if (fde)
+    return bases.func;
+  else
+    return NULL;
+}
+
 #ifndef __ia64__
 _Unwind_Ptr
 _Unwind_GetDataRelBase (struct _Unwind_Context *context)

gcc/unwind-sjlj.c

@@ -208,6 +208,12 @@ _Unwind_GetRegionStart (struct _Unwind_Context *context __attribute__((unused))
   return 0;
 }
 
+void *
+_Unwind_Find_Enclosing_Function (void *pc)
+{
+  return NULL;
+}
+
 #ifndef __ia64__
 _Unwind_Ptr
 _Unwind_GetDataRelBase (struct _Unwind_Context *context __attribute__((unused)) )